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dice_test.go
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dice_test.go
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package dice
import (
"fmt"
"sync"
"testing"
)
type testRng struct {
Max int
current int
lk sync.Mutex
}
func (r *testRng) Intn(n int) (v int) {
r.lk.Lock()
v = r.current
r.current = (r.current + 1) % r.Max
r.lk.Unlock()
if v > n-1 {
v = n - 1
}
return
}
func TestRoll(t *testing.T) {
rng := &testRng{Max: 6}
dice := newDiceRollP(6, 6, -1, false, rng, false)
if dice.Total != 20 {
t.Errorf("Expected 20, got %v.", dice.Total)
}
rng = &testRng{Max: 10}
dice = newDiceRollP(20, 10, 2, false, rng, false)
if dice.Total != 112 {
t.Errorf("Expected 112, got %v.", dice.Total)
}
rng = &testRng{Max: 6}
dice = newDiceRollP(1, 6, 0, true, rng, false)
if dice.Total != 3 {
t.Errorf("Expected 3, got %v.", dice.Total)
}
}
func TestRollD6(t *testing.T) {
rng := &testRng{Max: 6}
dice := newDiceRollP(6, 6, 0, false, rng, true)
if dice.NumberOfDice != 7 {
t.Errorf("Expected 7 dice, got %v.", dice.NumberOfDice)
}
if dice.Total != 22 {
t.Errorf("Expected 22, got %v.", dice.Total)
}
rng = &testRng{Max: 6}
dice = newDiceRollP(1, 6, 0, false, rng, true)
if dice.NumberOfDice != 1 {
t.Errorf("Expected 1 die, got %v.", dice.NumberOfDice)
}
if dice.Total != 1 {
t.Errorf("Expected 1, got %v.", dice.Total)
}
}
func ExampleDiceRoll_Description() {
dice := RollP(3, 6, -1, false)
fmt.Println(dice.Description())
dice = RollP(2, 6, 0, true)
fmt.Println(dice.Description())
// Output: 3d6-1
// 2.5d6
}
func ExampleDiceRoll_Description_text() {
dice, _ := Roll("3d6-2")
fmt.Println(dice.Description())
fmt.Println(dice.NumberOfDice)
fmt.Println(dice.DieFaces)
fmt.Println(dice.Adder)
// Output: 3d6-2
// 3
// 6
// -2
}
func BenchmarkRoll(b *testing.B) {
for i := 0; i < b.N; i++ {
_, _ = Roll("3d6+1")
}
}
func BenchmarkRollP(b *testing.B) {
for i := 0; i < b.N; i++ {
_ = RollP(3, 6, 1, false)
}
}